package io;

import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;

public class Test2 {
    public static void main(String[] args) throws IOException {
        FileOutputStream fos=new FileOutputStream("doo.txt");

        fos.write(3);
        fos.write(5);
        System.out.println("写完了");
        fos.close();
    }
}
